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- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Shaft sealing ring, also commonly referred to as a drive shaft or outer seal, that sits around a rotating shaft or axle in the rear differential/axle assembly. Its primary function is to keep gear oil or differential lubricant contained while preventing contamination from entering the assembly.
Fits:
Porsche 911 (930) Turbo 1975 - 1989
Diagram ref no 11.
• Dimension: Manufactured to replicate the original Porsche part’s critical dimensions (65 × 85 × 8 mm)
• Position: Outer drive-shaft or axle tube interface, rear differential assembly
• Benefit: Accurate dimensions & material matching for proper sealing and long life
Over time, the original seal may harden, crack, or fail under heat, oil exposure and axle rotation, leading to oil leakage, differential lubricant loss or contamination ingress—potentially accelerating bearing or gear wear.
When to Replace:
• During rear axle or differential service, especially when removing the drive-shaft/cross-tube.
• If you observe lubricant leaking from around the outer axle or trailing arm area, or cleaned-up oil traces near the seal.
• As part of preventative maintenance when rebuilding suspensions or axles, especially in Turbo-Look or high-performance 911 models
Replacing with a new seal restores correct internal lubrication, prevents leakage and protects drivetrain components for the long term.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99911323540
The product you are viewing cross references to these numbers
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
The OE Match Front Wheel Bearing Kit is a high-quality replacement kit designed to restore smooth, reliable wheel hub operation and maintain the safe performance of the front suspension and steering systems. Engineered to OE specifications for fit, durability and performance, this kit provides the essential bearing components required to support the front wheel assembly while allowing free and efficient wheel rotation.
Fits
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-85
Wheel bearings are critical to vehicle safety and handling, supporting both radial and axial loads generated during acceleration, braking and cornering. This OE Match kit is ideal for preventative maintenance, suspension repairs and full hub overhauls, helping to restore factory-level driving characteristics.
What This Product Does:
- Supports the front wheel hub and wheel assembly.
- Allows smooth wheel rotation with minimal friction.
- Maintains correct wheel positioning and alignment.
- Helps absorb loads generated during braking, acceleration and cornering.
- Supports steering precision and suspension performance.
- Contributes to vehicle stability, safety and ride quality.
Symptoms Of Wear Or Failure:
- Humming, rumbling or growling noises from the wheel area.
- Noise that increases with vehicle speed.
- Changes in bearing noise when cornering.
- Steering wheel vibration.
- Excessive wheel or hub play.
- Uneven tyre wear.
- Reduced steering accuracy.
- ABS warning lights on vehicles where bearing wear affects sensor operation.
- Excessive heat around the wheel hub.
Why Replacement Matters:
- Wheel bearings operate under constant load while being exposed to road impacts, moisture, contamination and temperature fluctuations. Over time, bearing surfaces can wear, lubrication can deteriorate and contaminants can enter the bearing assembly, reducing performance and reliability.
- A worn wheel bearing can negatively affect steering precision, suspension operation and vehicle stability. As wear progresses, additional strain may be placed on wheel hubs, suspension components, tyres and braking systems. In severe cases, bearing failure can compromise wheel support and create a significant safety concern.
- Replacing worn wheel bearings with an OE Match Front Wheel Bearing Kit restores smooth wheel operation, improves steering feel and helps maintain proper vehicle handling. Manufactured to OE standards, this kit provides dependable long-term performance and is an essential component for maintaining the safety and reliability of your Porsche.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99905906700
The product you are viewing cross references to these numbers
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Front INNER Wheel Bearing
Sold each
Restore smooth and reliable front wheel rotation with this
OE Match Front Inner Wheel Bearing. The wheel bearing allows the front hub and wheel to rotate
smoothly while supporting the weight and cornering loads placed on the
suspension. A worn bearing can cause noise, excessive play and poor wheel
control.
Fits:
- Porsche 944 2.5L 8V 1987
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Diagram Ref No 5
What Does the Front Inner Wheel Bearing Do?
The inner wheel bearing sits within the front hub assembly and works with the outer bearing to support the rotating hub.
A correctly functioning wheel bearing helps:
- Allow smooth wheel and hub rotation
- Support vehicle and cornering loads
- Maintain correct hub alignment
- Minimise friction during wheel rotation
- Prevent excessive movement at the wheel
- Support consistent steering and handling
Why Do Wheel Bearings Fail?
Wheel bearings are subjected to continuous rotation, road impacts, heat and heavy suspension loads. Wear gradually develops with mileage and age.
Common causes include:
- Normal bearing wear
- Incorrect bearing adjustment
- Insufficient or contaminated grease
- Water and dirt contamination
- Damaged bearing seals
- Corrosion
- Heavy impacts from potholes or kerbs
- Incorrect installation or overtightening
Poor lubrication or incorrect adjustment can considerably shorten bearing life.
When Should the Front Wheel Bearing Be Replaced?
Replacement should be considered if:
- A humming, rumbling or grinding noise is present
- Noise increases with road speed
- Excessive play is detected at the front wheel
- The bearing feels rough when rotated
- Steering or wheel stability becomes inconsistent
- The bearing shows corrosion or surface damage
- Inspection reveals worn rollers or bearing races
Wheel bearing noise can sometimes be confused with tyre or suspension noise, so inspection is recommended before replacement.
Important Front Hub Checks
When replacing the inner wheel bearing, the complete front hub assembly should be inspected.
Check the outer wheel bearing, bearing races, seals, spindle and hub for wear or damage. Bearings should be correctly lubricated and adjusted during installation.
If the mating bearing race is worn, scored or damaged, it should also be replaced rather than fitting a new bearing against a damaged surface.
Porsche 944, 928 & 968 Front Wheel Bearings
Front wheel bearings are essential components of the Porsche 944, 928 and 968 suspension and hub assemblies, allowing the wheels to rotate smoothly while supporting substantial vehicle and cornering loads.
As these models age, bearing wear, deteriorated grease and contamination can cause increased noise, roughness or excessive wheel movement.
When servicing Porsche front wheel bearings, the inner and outer bearings, races, seals and hub should all be inspected to ensure the complete assembly remains in good condition.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99905909000
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Fits:
Porsche 993 1994-98
Porsche 964 (Factory Turbo Look) 1991-93
Porsche 965 (964 Turbo) 1991-93
Porsche 928 1978-95
Old Porsche part numbers:
99905305000, 99905305001, 92833158300
Please Note - It is recommended to replace the hub nut as this is a use once only item.
Please check vehicle details closely in the "You may also like" options in the Basket
Related reference numbers
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99905305502
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
- Porsche 912E 4CYL 1976
2 required, sold each.
Fits:
Porsche 911 1970-89
Porsche 912 1976
Porsche 924 / 924S 1977-88
Porsche 928 1978-95
Porsche 944 1983-91
Porsche 968 1992-95
Diagram ref no 35
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91134166300
The product you are viewing cross references to these numbers